用途:主要用于门禁系统、工业电话、自动售货机、安防系统等公共设施。1.外壳采用专用PC/ ABS 2。304#不锈钢铠装线或PVC卷绕线3。防穿孔和高保真发射机和接收机。1.管材长度灵活,标准为900mm,管材直径:Φ8.4mm、Φ7.8mm、Φ6.5mm 2。连接器可选:Y-spade,RJ11,XH-pg,USB,音频插孔,航空接头,XLR连接器等。3.高强度钢丝绳直径可选:标准为Φ1.6mm,其他直径为Φ2.0mm,Φ2.5mm 4。 Handset Color: standard is black or red, other color can be customized. 5. Microphone: Electret microphone or Dynamic microphone. Specification Waterproof Grade IP65 Ambient Noise ≤60dB Working Frequency 300~3400 Hz SLR 5~15 dB RLR -7~2 dB STMR ≥7 dB Working Temperature -25℃~+65℃ Relative Humidity ≤95% Atmospheric Pressure 80~110 K Pa